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220 runs better with the idle set slightly high.
Posted: 12:47 pm Jul 27 2022
by JZ05220r
I know it’s a kinda dumb statement but it feels so much better. Maybe because the pilot jet is set incorrectly.
Re: 220 runs better with the idle set slightly high.
Posted: 11:43 pm Jul 31 2022
by billie_morini
JZ, assuming pilot jet is correctly size, then it could be:
1) Carb air screw is not correctly set (this is most desirable condition),
2) Air filter box to carb manifold leak (engine is able to suck air through leak and higher idle setting provides more fuel to balance air & fuel. But, this problem usually produces rough and ever changing engine behavior), or
3) Carb needle clip in position that is too low (like P1. P1 is bottom groove. P4 is top groove)
Re: 220 runs better with the idle set slightly high.
Posted: 08:58 am Aug 01 2022
by SS109
billie_morini wrote: 11:43 pm Jul 31 2022
3) Carb needle clip in position that is too low (like P1. P1 is bottom groove. P4 is top groove)
Just a small correction, on needles the top position is always #1 and the bottom #5.
Re: 220 runs better with the idle set slightly high.
Posted: 10:10 pm Aug 04 2022
by JZ05220r
billie_morini wrote: 11:43 pm Jul 31 2022
JZ, assuming pilot jet is correctly size, then it could be:
1) Carb air screw is not correctly set (this is most desirable condition),
2) Air filter box to carb manifold leak (engine is able to suck air through leak and higher idle setting provides more fuel to balance air & fuel. But, this problem usually produces rough and ever changing engine behavior), or
3) Carb needle clip in position that is too low (like P1. P1 is bottom groove. P4 is top groove)
I am going to try moving the clip from the middle position to the second from top and see how that goes. Thank you
Re: 220 runs better with the idle set slightly high.
Posted: 02:17 pm Aug 27 2022
by billie_morini
[/quote]
Just a small correction, on needles the top position is always #1 and the bottom #5.
[/quote]
Yes, SS is correct. It's always an accident with me regarding right, left, east, west, up, down, etc.
Re: 220 runs better with the idle set slightly high.
Posted: 03:23 pm Aug 27 2022
by SS109
billie_morini wrote: 02:17 pm Aug 27 2022
Yes, SS is correct. It's always an accident with me regarding right, left, east, west, up, down, etc.
It's all good my brother! I make mistakes on an hourly basis!
